Windows 7 - Explorer.exe crashing frequently on right click

Hello all, I've been driven batty over this windows 7 bug, which of course only happens on my main machine and not any other, and seems to have survived reloads... Either way, frequently (in spurts, doesn't do it for a while, then does it constantly even after reboots, then dies down for a while) windows explorer will crash and restart, often times triggered by right clicking for a context menu on any explorer process item (my computer, desktop, etc). My first thought was a shell extension but after disabling everything non-ms, it is still doing it. Ironically, the only other problem is that after restarting I will always get the 'files waiting to be written to CD' balloon, which of course I can't clear either (tried deleting the files in the CD writing temp directory, nothing on a CD shows to be 'waiting' either). Here's the skinny:

Faulting modules listed at different times through AppLog:
ntdll.dll (most common)
msvcrt.dll (2nd most common)
MFPlay.DLL (once)
OLE32.dll (rarely)

Things Tried:
Disable shell extensions
Virus Scan (although happens on a new fresh load, so virus highly unlikely)
Update drivers
Remove programs (although again, on fresh load, so 3rd party apps unlikely though may exacerbate of course)
SFC scan for corruption (none found)
Full 48 hour memory test

As I'm now pretty much out of ideas and suggestions made to others, I've decided to ask for help on this one; I've attached a minidump (Win7x64) to this so if H2SO4 or others are better at reading it than I am (which wouldn't take much, my WinDbg-Fu is very weak) I'd love to see if they can determine the cause! Finally, at my system specs show I'm running a P5Q-Pro with an E8500 and 4Gb of G-Skill RAM, all at and always have been stock clock rates. I'd be happy to entertain just about anything sane to try as I'm at my wits end with this!

Thanks in advance,
Diamond187

Are you running a version of Firefox, mainly 3.5.x or 3.6.x, and using 'Private Mode', or 'Never Remember History'?

3.5.5 and never remember history, yes. Either your psychic or I see this going somewhere...
edit: found your post and bug with mozilla; I'm not using private more, but never remember history yes. Either way, sounds like this is a clipboard induced heap corruption issue; any word on when MS is going to fix it on their side? This has been happening since the beta versions and I'd love to get rid of it... Strange thing is that I've never had it happen on any other computers, but thinking of it they are Windows 7/32- guess this is a x64 issue?

LOL, FF 3.5+ causes this problem, also the reason why i can't use it. i got the same problem.

Apparently Mozilla have a fix that we will see in 3.5.7, sadly it didn't make 3.5.6, which was released yesterday.

The fix should also appear in 3.6b6 or 3.6 RC, whichever is first.

I am running 3.6b6pre at the moment, with 'Never remember history' selected, and it's been great for over a week.

According to Mozilla, Microsoft are aware of the problem and are working on a fix at their end.

My advice for the moment would be to use either a current release with 'Remember history', and use CCleaner to clear your history.

Or use a beta/nightly build that has the fix included.

http://ftp.mozilla.org/pub/mozilla.o....installer.exe

http://ftp.mozilla.org/pub/mozilla.o....installer.exe

Hope that helps mate.

Shouldn't be long now.

Thank you for the FF tip. Hopefully that will solve my problem as well.

That's odd, apparently posted somewhere here about the new FF release, someone mentioned the bug was already fixed :S.

I'm not using FF just for the fact, i went to Opera when i left FF, and now i like Opera better.

Not according to Mozilla, on my bug report:

https://bugzilla.mozilla.org/show_bug.cgi?id=518412

The fix has been approved, and pushed, but is yet to appear in an official release.

Nor is it in the official 3.5.6 release notes:

Mozilla Firefox 3.5.6 Release Notes

Still, if it has, and I certainly don't know about it, I'll go right ahead with my clean install.

I love Opera on Windows Mobile 6.5, never tried it on Windows.

I use Opera on my PC, till FF fixes that problem :P

Solved here:

explorer.exe has stopped working, ntdll.dll causes it